[tcb] Re: Timing
- From: sammie smith <bugcollections@xxxxxxxxxxxxx>
- To: tcb@xxxxxxxxxxxxx
- Date: Fri, 24 Sep 2010 06:26:57 -0700 (PDT)
What Chuck says plus: Set the valves at .006. I would just do a general tune
up. New plugs, points, condensor, set timing (per Chuck), set new plugs at
.024, set points at .016, adjust carbs, and you should be good to go. If that
doesn't make it run right then start looking for problems. If it sat for that
long you may have gunked up fuel in fuel lines, filter, fuel pump and/or carb.
--- On Fri, 9/24/10, chuck <sukchew@xxxxxxxxxxxxxx> wrote:
From: chuck <sukchew@xxxxxxxxxxxxxx>
Subject: [tcb] Re: Timing
To: tcb@xxxxxxxxxxxxx
Date: Friday, September 24, 2010, 6:29 AM
Don't overlook the Dist.cap and plug wires.The point gap can also cause
backfire and bad running.
If memory serves me correctly The single mark on the pulley is tdc the
second 7.5degrees and the third is 10 degrees.Time it at 10 static and leave
it alone.
If you can adjust the valves they aren't dropped or stuck.Look for a
problem somewhere else.
oleblue
----- Original Message -----
From: "Gerald Livingston" <gerald.tcb@xxxxxxxxxxxxx>
To: <tcb@xxxxxxxxxxxxx>
Sent: Friday, September 24, 2010 5:40 AM
Subject: [tcb] Timing
> Trying to figure out a most likely bastardized engine.
>
> Case and heads are both Hecho en Mexico. No other castings that I can
> see (at 0400 when I was out there adjusting the valves).
>
> It is a SINGLE PORT engine that was built somewhere around 2001 then
> supposedly only had 3000 miles put on it before the bus was parked. No
> way to tell if it's a 1500 or 1600.
>
> The pulley has 3 marks like so:
>
> | ||
>
> I am assuming that the one on the left is TDC and the two on the right
> are 5 and 7.5 BTDC. It was timed to the one on the left and pushed the
> bus it's in now fine for 1000 miles like that.
>
> Then it kinda freaked out. Bucking and backfiring through the carb and
> losing power. A lot like a dropped or stuck valve. Hence the valve
> adjustment. they all looked good for a motor that has had 1000 miles
> put on it after sitting up for 7 or 8 years. I could still fit at least
> a .004 through all of them. I adjusted them back out to .006 but my
> brain is frazzled right now. Many long days at work. I have started
> second guessing myself. Should they be at .008 or .006?
>
> And, where the heck should I set the timing? Yes, it has a 009 on it.
> I'll use the unsharpened pencil trick later today to determine which
> mark is REALLY TDC. But once that's done does a single port get set to
> somewhere BTDC or ATDC? 5 or 7.5? I'm using a static light, not a
> strobe.
>
> Thanks all,
>
> Gerald
>
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